Moved from 2133mhz ram (2x8gb) to 3000mhz Ram (1x8gb) Need help.

[Robm86]

Hi,


I have a Ryzen 2600x and i was running it on 2133mhz ram (2 x 8gb) but decided to upgrade to 8gb of 3000mhz as apparently Ryzen prefers higher speed ram. Now i swapped it over and it was still showing 2133mhz in task manager, hwinfo so i changed the speed in the bios to 3000mhz and when i turned the computer back on task manager said the speed was 3000mhz but in HWinfo and CPU-Z it is saying it is running at 1496.4mhz. Can anyone give me some idea as to why it is saying this? have i done something wrong?


I moved from corsair value select to Corsair vengeance lpx.


My specs are as followed.


CPU - AMD Ryzen 5 2600X


GPU - GTX 1070


MOBO - ASUS TUF B450


The mobo supports this ram and anything upto 3200mhz


I really don't understand what is going on? any help would be appreciated.


Here is a screen shot below of cpuz, taks manager and HWinfo.

Thanks

 

[bremen1874]

DDR memory runs at twice its clock speed (Double Data Rate). 2 x 1496.4MHz is roughly the 3000MHz you're looking for.

 

[keenan]

@bremen1874 beat me to it, but everything is correct. It's DDR4 so you double the speed shown in CPU-Z..

 

[Robm86]

DDR memory runs at twice its clock speed (Double Data Rate). 2 x 1496.4MHz is roughly the 3000MHz you're looking for.

@bremen1874 beat me to it, but everything is correct. It's DDR4 so you double the speed shown in CPU-Z..

So just me being stupid then lol, thanks for the reply, appreciate it.

 

[Randomface74]

Isn't this a downgrade?

 

[pastymuncher]

First off, you should have gotten 2x 8Gb sticks so that it runs in dual channel. Second thing is, what stick of memory have you bought exactly? The reason I ask is because those timings (22-21-21-50) are abysmal. Memory running at 3000mhz Cas22 is probably not that much better than your old 2133mhz kit. In fact with it only running in single channel as well it could even be slower. Have you set the speed by XMP profile in the bios or just overclocked it? If you have just overclocked it that may account for the terrible timings and I would check to see how much voltage is being put through it as well. I don't know about Ryzen and it's finicky ways with memory but shouldn't you be setting the memory speed by enabling it's XMP profile in the bios so that it runs at the correct speed with the correct timings and voltage?

 

[HeX]

Isn't this a downgrade?

Yup!

Should have gone for 2 x 8GB, or 2 x 4GB if you wanted to stick to 8GB. You've gone from dual-channel to single-channel, and as pastymucher says, those timings are awful. You need to make sure you've enabled the XMP in BIOS rather than just selecting 3000MHz. Though you might want to think about sending it back and getting a propper 2 stick kit before you spend too much time making it work.

 

[azazl187]

Agreed. You need to be running RAM in dual channel.

Valuable lesson learned here today and I'm sure we have all been there so no need to labor the point.

 

[Deleted member 209350]

Ram should always be in dual channel for maximum performance. and as mentioned above, just double what you see on cpu-z